\doxysection{arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31 Struct Reference}
\hypertarget{structarm__cfft__radix4__instance__q31}{}\label{structarm__cfft__radix4__instance__q31}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}


Instance structure for the Q31 CFFT/\+CIFFT function.  




{\ttfamily \#include $<$arm\+\_\+math.\+h$>$}

\doxysubsubsection*{Public Attributes}
\begin{DoxyCompactItemize}
\item 
uint16\+\_\+t \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_ab413d2a5d3f45fa187d93813bf3bf81b}{fft\+Len}}
\item 
uint8\+\_\+t \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_adc0a62ba669ad2282ecbe43d5d96abab}{ifft\+Flag}}
\item 
uint8\+\_\+t \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_a5a7c4f4c7b3fb655cbb2bc11ef160a2a}{bit\+Reverse\+Flag}}
\item 
const q31\+\_\+t \texorpdfstring{$\ast$}{*} \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_af566355488b102d45d8ea2843bcc044e}{p\+Twiddle}}
\item 
const uint16\+\_\+t \texorpdfstring{$\ast$}{*} \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_af003d5a351cbc2d2077078766b22fedb}{p\+Bit\+Rev\+Table}}
\item 
uint16\+\_\+t \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_a8cf8187b8232815cf17ee82bf572ecf9}{twid\+Coef\+Modifier}}
\item 
uint16\+\_\+t \mbox{\hyperlink{structarm__cfft__radix4__instance__q31_a94d2fead4efa4d5eaae142bbe30b0e15}{bit\+Rev\+Factor}}
\end{DoxyCompactItemize}


\doxysubsection{Detailed Description}
Instance structure for the Q31 CFFT/\+CIFFT function. 

\label{doc-variable-members}
\Hypertarget{structarm__cfft__radix4__instance__q31_doc-variable-members}
\doxysubsection{Member Data Documentation}
\Hypertarget{structarm__cfft__radix4__instance__q31_a5a7c4f4c7b3fb655cbb2bc11ef160a2a}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!bitReverseFlag@{bitReverseFlag}}
\index{bitReverseFlag@{bitReverseFlag}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{bitReverseFlag}{bitReverseFlag}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_a5a7c4f4c7b3fb655cbb2bc11ef160a2a} 
uint8\+\_\+t arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::bit\+Reverse\+Flag}

flag that enables (bit\+Reverse\+Flag=1) or disables (bit\+Reverse\+Flag=0) bit reversal of output. \Hypertarget{structarm__cfft__radix4__instance__q31_a94d2fead4efa4d5eaae142bbe30b0e15}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!bitRevFactor@{bitRevFactor}}
\index{bitRevFactor@{bitRevFactor}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{bitRevFactor}{bitRevFactor}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_a94d2fead4efa4d5eaae142bbe30b0e15} 
uint16\+\_\+t arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::bit\+Rev\+Factor}

bit reversal modifier that supports different size FFTs with the same bit reversal table. \Hypertarget{structarm__cfft__radix4__instance__q31_ab413d2a5d3f45fa187d93813bf3bf81b}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!fftLen@{fftLen}}
\index{fftLen@{fftLen}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{fftLen}{fftLen}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_ab413d2a5d3f45fa187d93813bf3bf81b} 
uint16\+\_\+t arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::fft\+Len}

length of the FFT. \Hypertarget{structarm__cfft__radix4__instance__q31_adc0a62ba669ad2282ecbe43d5d96abab}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!ifftFlag@{ifftFlag}}
\index{ifftFlag@{ifftFlag}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{ifftFlag}{ifftFlag}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_adc0a62ba669ad2282ecbe43d5d96abab} 
uint8\+\_\+t arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::ifft\+Flag}

flag that selects forward (ifft\+Flag=0) or inverse (ifft\+Flag=1) transform. \Hypertarget{structarm__cfft__radix4__instance__q31_af003d5a351cbc2d2077078766b22fedb}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!pBitRevTable@{pBitRevTable}}
\index{pBitRevTable@{pBitRevTable}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{pBitRevTable}{pBitRevTable}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_af003d5a351cbc2d2077078766b22fedb} 
const uint16\+\_\+t \texorpdfstring{$\ast$}{*} arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::p\+Bit\+Rev\+Table}

points to the bit reversal table. \Hypertarget{structarm__cfft__radix4__instance__q31_af566355488b102d45d8ea2843bcc044e}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!pTwiddle@{pTwiddle}}
\index{pTwiddle@{pTwiddle}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{pTwiddle}{pTwiddle}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_af566355488b102d45d8ea2843bcc044e} 
const q31\+\_\+t \texorpdfstring{$\ast$}{*} arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::p\+Twiddle}

points to the twiddle factor table. \Hypertarget{structarm__cfft__radix4__instance__q31_a8cf8187b8232815cf17ee82bf572ecf9}\index{arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}!twidCoefModifier@{twidCoefModifier}}
\index{twidCoefModifier@{twidCoefModifier}!arm\_cfft\_radix4\_instance\_q31@{arm\_cfft\_radix4\_instance\_q31}}
\doxysubsubsection{\texorpdfstring{twidCoefModifier}{twidCoefModifier}}
{\footnotesize\ttfamily \label{structarm__cfft__radix4__instance__q31_a8cf8187b8232815cf17ee82bf572ecf9} 
uint16\+\_\+t arm\+\_\+cfft\+\_\+radix4\+\_\+instance\+\_\+q31\+::twid\+Coef\+Modifier}

twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. 

The documentation for this struct was generated from the following files\+:\begin{DoxyCompactItemize}
\item 
C\+:/\+Users/\+ASUS/\+Desktop/dm-\/ctrl\+H7-\/balance-\/9025test/\+Middlewares/\+ST/\+ARM/\+DSP/\+Inc/arm\+\_\+math.\+h\item 
C\+:/\+Users/\+ASUS/\+Desktop/dm-\/ctrl\+H7-\/balance-\/9025test/\+Middlewares/\+ST/\+ARM/\+DSP/\+Include/dsp/transform\+\_\+functions.\+h\end{DoxyCompactItemize}
